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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Male on one pin and female on other side
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
libido test (BSE)
6-8 weeks
Jersey Cow
2. Days which have decreasing daylight hours
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3. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)
4 major reasons for culling dairy cows
elastrator
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
pelvis
4. Way to know everything is alright with the breeding male
sow estrus cycle
Holstein Cow
mare's estrous cycle
purpose of Breeding Soundness Exam (BSE) for males
5. Duct through penis that carries sperm and urine
cow gestation
organs used in spermatogenesis
sow estrus cycle
urethra
6. 147 days
ewe gestation
penis and prepuce observation (BSE)
accessory sex glands
accessory sex glands
7. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
Jersey Cow
femininity of a heifer
libido test (BSE)
Sperm growth rate
8. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.
mare gestation
Grading choice
colostrum
seasonally polyestrous
9. (male) pushes the testes upward toward the body for warmth or protection
mare's estrous cycle
dartos muscle
why does the cow need fat deposits during pregnancy?
Bull's fibro-elastic penis
10. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.
Brown Swiss Cow
van deferens
sow ovulation
uterus
11. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)
effects of BST
Dairy Cattle milking schedule
feeding a high producing dairy cow
effects of BST
12. What helps regulate spermatogenesis?
Dairy Cattle milking schedule
testosterone
castration
hypothalamus and pituitary gland
13. Start of the reproductive tract for the female. located outside of the body
eminal vesicles
mare ovulation
uterus
vulva
14. 30-38 hours after estrus cycle begins
penis sizes vs delivering methods
vagina
stag
sow ovulation
15. 30 hours after estrus begins
butterfat
estrus
penis proper
cow ovulation
16. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
cow gestation
ewe ovulation
pelvis
estrus
17. Depository for semen during insemination. where urine leaves the body
Sperm growth rate
vagina
sertoli cells
epididymis: definition - 3 parts - 4 functions
18. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days
Sperm growth rate
cow gestation
epididymis: definition - 3 parts - 4 functions
Reasons for gestation length being affected
19. 283 days
Culls bulls earlier (2 reasons)
butterfat
uterus
cow gestation
20. Male on one pin and female on other side
#1 cost in production
6-8 weeks
penis sizes vs delivering methods
libido test (BSE)
21. 2 month growth cycle. stored in the epididymis of the bull
Sperm growth rate
Grading choice
sow estrus cycle
functions of progestrone
22. To remove/separate testicles from animal's body before animal reaches puberty
oviducts
castration
Sperm survival specs
effects of estrogen
23. Superior genes are _______ to multiply
mare estrus
Hard
Parturition
functions of progestrone
24. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
Lutinizing Hormone in males
penis and prepuce observation (BSE)
1. more cost effective - 2. powdered milk is in excess production
Reasons for gestation length being affected
25. 4-6 days
mare estrus
Follical Stimulating in females
estrous
Brown Swiss Cow
26. Days which have decreasing daylight hours
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27. 1-3 days
things to check for in a breeding soundness exam (BSE)
estrus
mare's estrous cycle
sow estrus
28. Days which have increasing daylight hours
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29. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
dartos muscle
kidney stones also called ________ ___________ can develop in the sigmoid flexure
Follical Stimulating in females
Mares
30. Actual heat cycle (period)
estrus
prostaglandin
1. more cost effective - 2. powdered milk is in excess production
Hormones from both the fetus and the mom.
31. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)
spermatogenesis
cremaster muscle
Avg. bull specs
prostate gland
32. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
dry matter and water
estrous
Reasons for gestation length being affected
Follical Stimulating in females
33. What helps regulate spermatogenesis?
monorchid
Culls bulls earlier (2 reasons)
reasons for castration
testosterone
34. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)
feeding a high producing dairy cow
Parturition
Dairy Cattle Gestation
cow estrus cycle
35. Duct through penis that carries sperm and urine
polyestrous
urethra
rectal palpation (BSE)
scrotal circumference (BSE)
36. The more stressed out the male is - the less sperm he is going to produce
ewe's estrous cycle
hypothalamus and pituitary gland
humans: stress level vs sperm
functions of progestrone
37. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers
mastitis
Where livelihood is in agriculture
~1 month
why does the cow need fat deposits during pregnancy?
38. FEED
#1 cost in production
femininity of a heifer
testosterone
elastrator
39. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co
accessory sex glands
effects of BST
organs used in spermatogenesis
testis (gonads)
40. Provide nourishment for the developing sperm
polyestrous
Holstein Cow
Lutinizing Hormone in females
sertoli cells
41. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)
estrous
leydid or interstitial cells
sperm cell
dry matter and water
42. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
penis sizes vs delivering methods
normal presentation of the fetus
retractor muscles
kidney stones also called ________ ___________ can develop in the sigmoid flexure
43. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood
4 major reasons for culling dairy cows
stag
penis proper
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
44. Important 'landmark' during palpation
effects of estrogen
cervix
Reasons for gestation length being affected
Hard
45. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat
retractor muscles
Dairy Cattle milking schedule
functions of progestrone
colostrum
46. Front feet and head first. (except for hogs and dogs)
mare gestation
Jersey Cow
Holstein Cow
normal presentation of the fetus
47. When are dairy cattle dehorned?
~1 month
cervix
hormones
Brown Swiss Cow
48. Animals which have only one estrous cycle (ex: dog - fox)
monestrous
effects of BST
polyestrous
ewe estrus
49. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
penis sizes vs delivering methods
dartos muscle
spermatogenesis
ewe's estrous cycle
50. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)
oviducts
reason for seasonal breeding periods
age and castration
accessory sex glands